JPS6164545A - Device for opening and closing rear swing door of dump truck - Google Patents
Device for opening and closing rear swing door of dump truckInfo
- Publication number
- JPS6164545A JPS6164545A JP18604584A JP18604584A JPS6164545A JP S6164545 A JPS6164545 A JP S6164545A JP 18604584 A JP18604584 A JP 18604584A JP 18604584 A JP18604584 A JP 18604584A JP S6164545 A JPS6164545 A JP S6164545A
- Authority
- JP
- Japan
- Prior art keywords
- cargo box
- arm
- roller
- guide member
- carrying platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/26—Means for controlling movement of tailboards or sideboards
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Support Devices For Sliding Doors (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、ダンプカーの荷台の後方開口部に設けられた
煽戸を自動開閉するダンプカーの後部煽戸開閉装置に関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a rear sliding door opening/closing device for a dump truck that automatically opens and closes a sliding door provided at a rear opening of a loading platform of a dump truck.
く従来の技術〉
一般にリヤダンプカーにおいて、荷箱を傾倒して積載物
を放出するに際して、その荷箱の遠方に積載物を放出で
きるように、後部煽戸が、その開放時に荷箱の延長床面
を形成するようにしたものは既に知られている。Conventional technology> In general, in a rear dump truck, when the cargo box is tilted to release the loaded material, the rear sliding door is opened to extend the floor of the cargo box so that the cargo can be released far from the cargo box. Those that form a surface are already known.
〈発明の解決しようとする問題点〉
ところが従来のこの種ダンプカーでは、後部煽戸を荷箱
床面と同一平面になるように回動し、かつその位置に保
持するのに高価な油圧シリンダ等の駆動装置を用いたり
、また複雑な構造の後部煽戸開閉機構が用いられている
ので、製造コストが −かさむばかりでなく、過酷な条
件下での的確、円滑な作動を保障できない等の不具合が
あった。<Problems to be Solved by the Invention> However, in conventional dump trucks of this type, expensive hydraulic cylinders, etc. are required to rotate the rear fan door so that it is flush with the cargo box floor and to hold it in that position. The use of a drive device and a rear door opening/closing mechanism with a complicated structure not only increase production costs but also cause problems such as not being able to guarantee accurate and smooth operation under harsh conditions. was there.
そこで、本発明の目的は、油圧シリング等の駆動装置を
用いず、簡単で安価な構造でもって、荷箱の起伏運動を
利用して後部煽戸を自動的に開閉することができるダン
プカーの後部煽戸開閉装置を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to automatically open and close the rear door of a dump truck by utilizing the up-and-down movement of the cargo box, without using a drive device such as a hydraulic sill, and with a simple and inexpensive structure. An object of the present invention is to provide a fan door opening/closing device.
〈問題点を解決するための手段〉
」二記目的を達成するため、本発明の構成は、車体枠に
傾動可能に枢支されて搭載される荷箱の床面後部に、開
閉自在に下端が枢支される後部煽戸の基部に一体に延設
したアームと、上記アームの先端に一端を回動自在に連
結すると共に他端に当接部を有する作動腕と、」二記車
体枠に設けられ、」二記荷箱が伏倒位置にあるときに、
上記作動腕の他端の当接部に当接して、上記当接部の移
動を規制して、上記後部煽戸を閉鎖せしめる支持部と、
上記支持部に連らなり、上記当接部を支持部に向けて、
あるいは支持部から離脱する方向に案内するガイド面を
有するガイド部材を備えたことを特徴とする。<Means for Solving the Problems> In order to achieve the second object, the present invention has a lower end that can be opened and closed at the rear of the floor of a cargo box that is tiltably supported and mounted on the vehicle body frame. an arm extending integrally to the base of the rear sliding door on which the rear sliding door is pivotally supported; an operating arm having one end rotatably connected to the tip of the arm and having an abutting portion at the other end; 2. When the cargo box is in the prone position,
a support portion that comes into contact with the contact portion of the other end of the operating arm, restricts movement of the contact portion, and closes the rear fan door;
connected to the support part, with the contact part facing the support part,
Alternatively, it is characterized in that it includes a guide member having a guide surface that guides in the direction of separation from the support portion.
〈作用〉
本発明によるダンプカーの後部煽戸開閉装置において、
荷箱が水平な伏倒位置にあるときに、作動腕の他端の当
接部は、ガイド部材の支持部に当接し、この位置で支持
されているので、後部煽戸は、先端のアームを介して」
１記作動腕によって−１−記荷箱を閉鎖する位置に保持
される。次に、上記荷箱を車体枠の枢支点の回りに傾動
させると、上記作動腕の他端の当接部は、上記ガイド部
材の支持部に当接した位置で支持されたままなので、」
二記後部煽戸は、先端のアームを介して」−記作動腕に
よって、荷箱の床面後部の枢支点の回りに開放方向に荷
箱のダンプ位置に応じて徐々に回動せしぬられる。そし
て、上記荷箱が所定傾動角に達すると、上記後部煽戸は
、荷箱の床面と同一平面になるとともに、上記作動腕の
他端の当接部は、」二記ガイド部材の支持部からガイド
面に沿って離れる。<Function> In the dump truck rear fan door opening/closing device according to the present invention,
When the cargo box is in a horizontal prone position, the contact part of the other end of the operating arm contacts the support part of the guide member and is supported in this position, so the rear sliding door is 'via'
The operating arm holds the box in the closing position. Next, when the cargo box is tilted around the pivot point of the vehicle body frame, the contact portion of the other end of the operating arm remains supported at the position where it contacts the support portion of the guide member.
2. The rear sliding door cannot be rotated gradually in the opening direction according to the dumping position of the cargo box around the pivot point at the rear of the floor of the cargo box by the operating arm via the arm at the tip. It will be done. When the cargo box reaches a predetermined tilting angle, the rear sliding door becomes flush with the floor of the cargo box, and the contact portion of the other end of the operating arm is supported by the guide member described in 2. along the guide surface.
〈実施例〉 以下、本発明を図示の実施例により詳細に説明する。<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.
第１図はダンプカーの後部側面を縦断して示したもので
、車体枠１」二には荷箱２を搭載し、この荷箱２の後部
に固定したヒンジブラケット３を」二記車体枠１の後端
にピン４で枢支し、荷箱２をこのピン４の回りに後方に
傾動し得るようにしている。上記荷箱２の床面５後端に
、後部煽戸６の下端を軸７で枢支して、この後部煽戸６
を上開き自在にしている。上記後部煽戸６の基部６ａに
は、アーム８を一体に延設する。そして、作動腕９の一
端を上記アーム８の先端にピン１０で回動自在に連結す
るとともに、この作動腕９の他端に突設したピン１１に
当接部としてのローラ１２を回動自在に取付ける。また
、荷箱２の後方の延長枠１３の後端には、断面コ字状の
横フレーム１４を取付け、この横フレーム１４の左右両
端を荷箱２の左右の側壁１５に固定する。上記横フレー
ム１４の上面には、後部煽戸６の裏面６Ｃに当接して、
後部煽戸６の前面６ｂを床面５と同一平面に保持するゴ
ム等よりなるストッパ１６を貼着する。一方、上記荷箱
２の床面５の下方の車体枠１にガイド部材１７を突設す
る。このガイド部材１７は、後方に向かって開口した水
平な湾入部、即ち支持部１７ａとこの支持部１７ａに連
なるガイド面１７Ｉ〕を有する。」１記支持部１７ａは
、ローラ１２先端に当接してこれを規制し支持する支持
面１７ａ゛を有して、荷箱２が第１図に示した水平な伏
倒位置にあるとき、ローラ１２の先端が、支持面１７ａ
゛に当接して支持され、作動腕９．ピン１０およびアー
ム８を介して後部煽戸６をして荷箱２を閉鎖せしめるよ
うになっているが、それがら荷箱２が第２図に示した所
定傾動角（２３°）に傾動するまで、ローラ１２の先端
は、上記支持面１７ａ゛に当接した位置で支持され、作
動腕９．ピン１０およびアーム８を介して後部煽戸６を
、荷箱２の傾動に伴なって軸７の回りに開放方向に徐々
に回動せしめるようになっている。また、」二記ガイド
面１７１）は、荷箱２が第３図に示す最大傾動角（５０
°）に傾いてもローラ１２に接するように長くシ、さら
にガイド面１７ｂの後端の隅部には作動腕９に接触しな
いようにアール１７ｃを取って、荷箱２が上記所定傾動
角（２３°）からさらに傾いて、後部煽戸６が床面５と
同一平面になると、ローラ１２が、上記支持面１７ａ゛
がら離れガイド面１７１〕に当接しつつ後方へ摺動する
ようにしている。Figure 1 shows a longitudinal section of the rear side of a dump truck, in which a cargo box 2 is mounted on the vehicle body frame 1, and a hinge bracket 3 fixed to the rear of the cargo box 2 is mounted on the vehicle body frame 1. The rear end of the cargo box 2 is pivotally supported by a pin 4, so that the cargo box 2 can be tilted rearward around this pin 4. The lower end of the rear fan door 6 is pivotally supported on the rear end of the floor surface 5 of the cargo box 2 by a shaft 7, and this rear fan door 6
The top can be opened freely. An arm 8 is integrally extended from the base 6a of the rear fan door 6. One end of the actuating arm 9 is rotatably connected to the tip of the arm 8 with a pin 10, and a roller 12 as an abutting portion is rotatably connected to the pin 11 protruding from the other end of the actuating arm 9. Attach to. Further, a horizontal frame 14 having a U-shaped cross section is attached to the rear end of the extension frame 13 at the rear of the cargo box 2, and both left and right ends of the horizontal frame 14 are fixed to the left and right side walls 15 of the cargo box 2. The upper surface of the horizontal frame 14 is in contact with the back surface 6C of the rear fan door 6,
A stopper 16 made of rubber or the like is attached to keep the front surface 6b of the rear fan door 6 flush with the floor 5. On the other hand, a guide member 17 is provided to protrude from the vehicle body frame 1 below the floor surface 5 of the cargo box 2. The guide member 17 has a horizontal indented portion opening toward the rear, that is, a support portion 17a and a guide surface 17I connected to the support portion 17a. 1. The support part 17a has a support surface 17a' that comes into contact with the tip of the roller 12 to regulate and support it, and when the cargo box 2 is in the horizontal lying position shown in FIG. The tip of 12 is the support surface 17a
The operating arm 9. The rear sliding door 6 is closed via the pin 10 and the arm 8, but the cargo box 2 is tilted to a predetermined tilting angle (23°) shown in Fig. 2. Until then, the tip of the roller 12 is supported at a position in contact with the support surface 17a', and the operating arm 9. The rear sliding door 6 is gradually rotated in the opening direction around a shaft 7 as the cargo box 2 is tilted via a pin 10 and an arm 8. In addition, the maximum tilting angle (50°) of the loading box 2 shown in FIG.
The cargo box 2 is long enough to contact the rollers 12 even if it is tilted at the specified tilt angle ( 23°) and when the rear fan door 6 becomes flush with the floor 5, the roller 12 separates from the support surface 17a and slides rearward while contacting the guide surface 171. .
」−記構戊のダンプカーの後部煽戸開閉装置において、
第１図に示すように荷箱２が水平な伏倒位置にあるとき
、作動ｌｌｌｌ１１９の他端のローラ１２先端は、ガイ
ド部材１７の支持面１７ａ゛に当接してこの位置で支持
され、後部煽戸６は、」二記作動腕９を介して荷箱２を
閉鎖する位置に保持されている。” - In the rear door opening/closing device of the dump truck mentioned above,
As shown in FIG. 1, when the loading box 2 is in a horizontal prone position, the tip of the roller 12 at the other end of the operating lllll119 is in contact with the support surface 17a' of the guide member 17 and is supported in this position, and the rear The swing door 6 is held in a position to close the cargo box 2 via an operating arm 9.
この状態では、後部煽戸６の自重およびその前面６１）
に作用する積載物の重量は、アーム８１作動腕９および
ローラ１２を介してガイド部材１７の支持部１７ａによ
って受は止められている。いま、図示しない適宜な打」
−装置によって荷箱２をピン４の回りに傾動させると、
作動腕９の他端のローラ１２先端は、−に記支持面］、
７ａ“に当接した位置で支持されたままである。このた
め、後部煽戸６は、その自重およびその前面６１）にが
がる積載物の重量によって、荷箱２に対して軸７の回り
に第１図中で時計方向即ち開放方向へ、作動腕９を介し
て徐々に回動される。そして、荷箱２が第２図に示した
所定傾動角（２３°）に傾くと、後部煽戸は、その裏面
６ｃが荷箱２の延長枠１３の後端に設けたストッパ１６
に当接して、その前面６１〕が床面５と同一平面になる
。この状態では、後部煽戸６の自重等はストッパ１６を
介して上記延長枠１３で受は止められる。さらに荷箱２
の傾動が進むと、作動腕９の他端のローラ１２は、ガイ
ｌ’部１．４１７の−１−記支持面１７ａ゛がら離れ、
ガイド面１７１〕に当接しつつ後方へ摺動し、後部煽戸
６は、その前面６１）を床面５と同一平面に保って、荷
箱２と一体に傾動する。そして、荷箱２は、第３図に示
した最大傾動角（５０°）に達し、その積載物を−に記
同一平面が形成する延長シュートを経て遠方に排出せし
める。In this state, the dead weight of the rear fan door 6 and its front surface 61)
The weight of the loaded object acting on the guide member 17 is stopped by the support portion 17a of the guide member 17 via the arm 81, operating arm 9, and roller 12. Now, an appropriate blow (not shown)
- When the packing box 2 is tilted around the pin 4 by the device,
The tip of the roller 12 at the other end of the operating arm 9 is on the support surface shown in -.
7a". Therefore, the rear sliding door 6 moves around the axis 7 with respect to the cargo box 2 due to its own weight and the weight of the load hanging on its front surface 61). The cargo box 2 is gradually rotated clockwise in FIG. The rear surface 6c of the sliding door is connected to a stopper 16 provided at the rear end of the extension frame 13 of the cargo box 2.
, and its front surface 61] becomes flush with the floor surface 5. In this state, the dead weight of the rear sliding door 6 is stopped by the extension frame 13 via the stopper 16. Furthermore, packing box 2
As the tilting progresses, the roller 12 at the other end of the operating arm 9 separates from the -1- support surface 17a' of the guide l' portion 1.417.
The rear sliding door 6 slides rearward while contacting the guide surface 171], and tilts integrally with the cargo box 2 while keeping its front surface 61) on the same plane as the floor 5. Then, the cargo box 2 reaches the maximum tilting angle (50 degrees) shown in FIG. 3, and the cargo is discharged to a distant place through an extended chute formed by the same plane indicated by -.
に記実施例では、ガイド部材１７のローラ１２に対する
当接部を、支持面１７ａ゛、ガイド面１７Ｉ〕からなる
湾入部としたが、これを長孔としてもよい。また、ピン
ノブラケット３のピン４を着脱自在とし、また作動腕９
、ピン１１等を固縛自在とすることにより、グンブカー
をコンテナ運Ｊ般申としても使用で終る。In the embodiment described above, the contact portion of the guide member 17 with respect to the roller 12 is an indented portion consisting of the support surface 17a' and the guide surface 17I, but it may be formed into an elongated hole. In addition, the pin 4 of the pin bracket 3 is detachable, and the operating arm 9
By making the pins 11 and the like freely lashable, the Gunbucar can also be used as a container transporter.
〈発明の効果〉
以上の説明で明らかなように、本発明のダンプカーの後
部煽戸開閉装置は、車体枠に設けたガイド部材に他端が
当接して、支持、案内される作動腕によって、後部煽戸
を、荷箱の伏倒位置、ダンプ位置に応して閉鎖、開放せ
しめるようにしているので、後部煽戸の開閉を、荷箱の
起伏運動を利用して自動的に行なうことができ、人手に
よる後部煽戸の開閉繰作を行なう必要がないばかりでな
く、後部煽戸開閉のための動力を一切必要としない。ま
た後部煽戸は積載物の排出時にシュートを兼ねるので、
その積載物を車輌の後端より離れた位置に排出すること
かで外、とくに後部煽戸は、荷箱が所定傾動角以上に傾
くと荷箱床面と同一平面となり、以後その状態を荷箱の
最大傾動角まで的確、堅固に保持するので、積載物の排
出が、より的確、円滑、迅速に行なわれる。<Effects of the Invention> As is clear from the above explanation, the rear fan door opening/closing device for a dump truck of the present invention has an operating arm whose other end abuts against a guide member provided on the vehicle body frame, and which is supported and guided. Since the rear sliding door is closed and opened according to the lying position and dumping position of the cargo box, the rear sliding door can be opened and closed automatically using the up-and-down movement of the cargo box. This not only eliminates the need to repeatedly open and close the rear fan door manually, but also eliminates the need for any power to open and close the rear fan door. In addition, the rear fan door doubles as a chute when discharging loaded items, so
By discharging the loaded items away from the rear end of the vehicle, the rear sliding door, in particular, becomes flush with the floor of the loading box when the loading box is tilted beyond a predetermined tilt angle, and from then on, this condition can be maintained. Since the box is accurately and firmly held up to its maximum tilt angle, the loaded items can be discharged more accurately, smoothly, and quickly.
第１図は本発明の一実施例によるダンプカーの後部側面
縦断面図、第２図は第１図の荷箱が所定傾動角に傾いた
状態を示す図、第３図は第１図の荷箱が最大傾動角に傾
いた状態を示す図である。
１・・・車体枠、 ２・・・荷箱、 ・１・・・ピン
、 ５・・床面、 ６・・・後部煽戸、 ７・・・軸
、 ８・・・アーム、９・・・作動腕、 １０．１
１・・・ピン、 １２．、、ローラ、 １６・・・
ストッパ、 １７・・・ガイド部材、１７ａ・・・支
持部、 １７ａ゛・・・支持面、 １７１）・・・
ガイド面。FIG. 1 is a longitudinal sectional view of the rear side of a dump truck according to an embodiment of the present invention, FIG. 2 is a view showing the cargo box shown in FIG. 1 tilted to a predetermined tilt angle, and FIG. It is a figure which shows the state where a box is tilted to the maximum tilt angle. 1... Vehicle frame, 2... Loading box, 1... Pin, 5... Floor, 6... Rear fan door, 7... Shaft, 8... Arm, 9...・Working arm, 10.1
1...pin, 12. ,, Laura, 16...
Stopper, 17... Guide member, 17a... Support part, 17a'... Support surface, 171)...
guide surface.
Claims (1)
傾動可能に枢支し、その荷箱の床面後部に後部煽戸の下
端を開閉自在に枢支してなるダンプカーにおいて、 上記後部煽戸の基部に一体に延設したアームと、上記ア
ームの先端に一端を回動自在に連結すると共に他端に当
接部を有する作動腕と、上記車体枠に設けられ、上記荷
箱が伏倒位置にあるときに、上記作動腕の他端の当接部
に当接して、上記当接部の移動を規制して、上記後部煽
戸を閉鎖せしめる支持部と、上記支持部に連なり、上記
当接部を支持部に向けて、あるいは支持部から離脱する
方向に案内するガイド面を有するガイド部材を備えたこ
とを特徴とするダンプカーの後部煽戸開閉装置。(1) A dump truck consisting of a cargo box mounted on the body frame that is tiltably supported at the rear end of the vehicle body frame, and a lower end of the rear fan door that is pivoted to the rear of the floor of the cargo box so that it can be opened and closed. an arm extending integrally to the base of the rear sliding door; an actuating arm having one end rotatably connected to the tip of the arm and having an abutting portion at the other end; and an actuating arm provided on the vehicle body frame; a support portion that comes into contact with the contact portion of the other end of the operating arm to restrict movement of the contact portion and close the rear sliding door when the cargo box is in the prone position; A rear fan door opening/closing device for a dump truck, comprising a guide member that is continuous with a support part and has a guide surface that guides the abutting part toward the support part or in a direction away from the support part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18604584A JPS6164545A (en) | 1984-09-04 | 1984-09-04 | Device for opening and closing rear swing door of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18604584A JPS6164545A (en) | 1984-09-04 | 1984-09-04 | Device for opening and closing rear swing door of dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6164545A true JPS6164545A (en) | 1986-04-02 |
Family
ID=16181432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18604584A Pending JPS6164545A (en) | 1984-09-04 | 1984-09-04 | Device for opening and closing rear swing door of dump truck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6164545A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956996A3 (en) * | 1998-05-11 | 2000-09-27 | NC Agricultural Engineering Company Limited | A trailer |
| US6648420B1 (en) * | 2002-06-27 | 2003-11-18 | Ernest Bontrager | Tailgate apparatus for a dumpster-type dump truck |
-
1984
- 1984-09-04 JP JP18604584A patent/JPS6164545A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0956996A3 (en) * | 1998-05-11 | 2000-09-27 | NC Agricultural Engineering Company Limited | A trailer |
| US6648420B1 (en) * | 2002-06-27 | 2003-11-18 | Ernest Bontrager | Tailgate apparatus for a dumpster-type dump truck |
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